...Caught between the need for a continuous bike lane and the demands of drivers, Portland transportation engineers finally came up with a solution. Next month, the city will fill the gaps in the network with new shared-lane pavement markings, called "sharrows." Stencils of a bicycle with two chevron markings above it will be painted, two per block, in areas too narrow for a bike lane. The idea is to keep cyclists away from parked cars while promoting awareness of their right to use the road.
"The sharrow sends the message to cyclists, 'yes, you are welcome here,' "...
...Pioneered in Denver in the mid-1990s, sharrows are attracting the attention of transportation officials around the United States. But the markings are controversial. In June, Boulder, Colo., became one of the few cities outside of California to install the shared-lane markings... [more]
See also story about introduction of SHARROWS in Cincinnati